CologneGermany |
Porto AlegreBrazil |
1 017 155
(2011) |
1 017 155
(2011)
1 467 823
(2013) |
1 467 823
(2013) |
405 km2
|
405 km2
496 km2
|
496 km2
|
2 511.49
/km2 |
2 511.49/km2
2 959.32/km2
|
2 959.32
/km2 |